Improvement in machine for molding pulleys



UNITED STATES PATENT OEEIcE THOMAS KNOVLES, ROBERT KNOVLES, AND SAMUELKNOWLES, 0F JERSEY CITY, NEW JERSEY.

IMPROVEMENT INTIVIACHINE FOR MOLDING PULLEYSY.V

Specification forming part oi' Letters Patent No. 70,864, dated November12, 1867.

To all whom it may concern:

Beit known that we, THOMAS KNowLEs,

ROBERT KNowLEs, and SAMUEL KNowLEs,

all of Jersey City, in the county of Hudson and State of New Jersey,have invented a new and useful Machine or Apparatus for Molding Wheels,and other objects or work ot' a curvilinear character, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying drawing, forming part of this specification, .and inwhich- Figures l and 2 represent front and side elevations of anapparatus or apparatuses in part illustration of our invention, and'Fig.3 a plan of the same.

Ourinvention seeks to supply a desideratum long wanting in foundry-work;and consists in a machine or apparatus constructed to mold with accuracyand precision, from and by the use of a mere segment as a pattern,wheels and pulleys, or the rim portions thereof, of'various descriptionsand sizes, and other work ot' curvilinear character, said machine beingof a portable character, and embracing the following elements, to wit: avertical post or pillar capable of being driven or inserted into thesand, horizontally adjustable ram arranged thereon, and carrying avertically-adjustable similar device, which serves to hold the segmentor pattern, and dividing-gear for regulating the swing of the horizontalram, to repeat the impression of the segment in the sand in continuationof the impression previously made by it.

Referring to the accompanying drawing, A is a post or pillar, the lowerend of which is suitably formed to admit of its'easy entrance, bydriving or otherwise, into the sand or tloor of the foundry, andcarrying at itsupper end ahead, B, capable of horizontal rotation, andto which is secured a bed, C, that serves to carry ahorizontally-adjustable ram, Dhav ing a sliding motion transversely tothe axial line of the pillar, and which motion or adjustment may beeffected by a screw, rack and pinion, or other suitable means. The bed Gis shown provided with a bracket, a, which carries an endless screw, E,working into a worm-wheel, F, fast to the pillar, and the shaft of thescrew represented as having on it-one,

G, of a series of change-wheels, G G1 G2, of

wheel, G2, being adjustablyhungon a shaft, l),

carried by the horizontal ram D, and on which shaft may behungadividing-wheel, G3, having gearing with it a stopper or catch, c, sothat on turning the shaft b by crank or handle, a fixed and dividedswing or set may be given to the bed C and ram D, to provide for theadjustment of the segmental pattern to repeat or continue the impressionin the sand, as hereinafter more fully explained.

Vhen required toswing the ram D otherwise, or than as subject to suchadjustment, then the wheel G2 may be slipped out of gear, or will bethrown out of gear by the transverse movement or sliding action of theram, so as to sweep or turn the latter with facility and dispatch; butafter adjustment of said ram to any required distance at its forward endfrom the center of the post, according to the diameter of the wheel orcurvature of the object to be molded, or, rather, when ready to make theimpression in the sand, then the wheel G2 should be put in gear with thewheel Gl. Any other system or combination of `di viding-gear may, ifdesired, be adopted. The forward end of the rain D carries averticaltable', H, in which is arranged and 4may be vertically adjustabletherein, or on, by screw or otherwise, a slide or second ram, I,furnished with a foot at its lower end, to which may be secured thesegmental pattern. A scale or measure may be attached to the apparatusto determine the radial adjustment of the horizontal ram D.

The moldlnay be made either in the open sand or in boxes 5 and as therams occupy the same relative position to the pillar, whether the latterbe strictly vertical or be set more or less inclined, no greatparticularity is requisite in inserting the apparatus in the sand. i j

Prior to molding, the sand may be leveled, or a bed formed in it bymeans of a sweep having a slotted connection with a swinging arm, J,turning freely on the post, after which the sweep is removed, and thesegmental pattern being' secured to the foot of the vertical ram I, thehorizontal raln D is adjusted radially to the pillar, according to thediameter of the wheel required, or curvature of the segment, when thevertical ram I is lowered, and the necessary impression made in thesand, following which the latter-mentioned ram is raised, and a circularadjustment on the post made of the horizontal ram D, as regulated by thedividing-gear, for a distance corresponding' to the length of thesegment or pattern, which is again lowered by depressing the ram I, andso on, till the whole Wheel or mold is formed. It' the casting isdesigned to he a Wheel, then the arms and center portion may regardskeeping up the continuity in the mold. It, of course, is equallyapplicable to molding small as large wheels, plain or toothedfwith orWithout flanges, pulleys, segments, or other objects of a curvilinearcharacter or shape, and of which the pattern forms a section ordivision.

What is here claimed, and desired to be secured by Letters Patent, is-

A machine or apparatus for molding wheels or other Work of curvilinearcharacter, having for its elements a pillar or post, A,horizontally-swinging,` and radially-adjustable ram D, carrying avertically-adjustable ram or patternholder, I, and dividing-gear foradjusting the swing of the horizontal ram, substantially as specified. y

THOMAS KNOWLES. ROBERT KNOWLES. SAMUEL KNOWLES. W'itnesses A. LE CLERC,CHARLES H. AsnToN.

